Data/hora: 22/09/2024 15:57:52

Biblioteca(s): 	Embrapa Pantanal; Embrapa Pecuária Sudeste.	
Data corrente: 	15/01/2024	
Data da última atualização: 	15/01/2024	
Autoria: 	OLIVEIRA, P. P. A.; RODRIGUES, P. H. M.; PRAES, M. F. F. M.; PEDROSO, A. de F.; OLIVEIRA, B. A.; SPERANÇA, M. A.; BOSI, C.; FERNANDES, F. A.	
Afiliação: 	PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; PAULO HENRIQUE MAZZA RODRIGUES, University of São Paulo; MARIA FERNANDA FERREIRA MENEGUCCI PRAES, University of São Paulo; ANDRE DE FARIA PEDROSO, CPPSE; BIA ANCHÃO OLIVEIRA, Massey University; MARCO AURÉLIO SPERANÇA, Universidade Estadual Paulista; CRISTIAM BOSI; FERNANDO ANTONIO FERNANDES, CPAP.	
Título: 	Soil carbon dynamics in Brazilian Atlantic forest converted into pasture-based dairy production systems.	
Ano de publicação: 	2021	
Fonte/Imprenta: 	Agronomy Journal, v. 113, n. 2, p. 1136–1149, 2021.	
DOI: 	10.1002/agj2.20578	
Idioma: 	Inglês	
Conteúdo: 	The conversion of Brazilian tropical forests into pastureland was a complex process, potentially harmful to the environment, heightened by degraded grazing systems that did not ensure sustainability and affected the ecosystem resilience. This study was conducted to determine the long-term changes in soil C stocks in native forest (FOR) converted to pasture-based dairy systems (continuous grazing system with low stocking rate–CLS; rotational grazing system with high stocking rate–RHS). Soil samples were analyzed for texture, C, organic matter (OM), bulk density (BD), C stock, and carbon accumulation rates (CAR) in 0-to-5-, 5-to-10-, 10-to-20-, 20-to-30-, 30-to-40-, 40-to-60-, 60-to-80-, and 80-to-100-cm depths in six trenches. Bulk density was higher in RHS compared with CLS and FOR in most of the soil layers. In the 0-to-5-cm layer, C and OM were greater in CLS. Carbon contents were similar in RHS and FOR, whereas OM was higher in FOR. Intensification increased BD, reduced OM, and did not affect C content in the 0-to-5 cm layer. For all treatments, C stock and CAR were higher in the 0-to-100 cm (136.73 Mg ha−1 and 0.4252 Mg ha−1 yr−1) than the 0-to-30 cm (61.79 Mg ha−1 and 0.0447 Mg ha−1 yr−1) layer. The soil C stock remained equal for both pastureland and presented a positive CAR in relation to the forest, working as C sinks. The RHS presented the greatest forage yield, carrying capacity and milk yield. This management resulted in a land-saving effect of 2.7 ha for each hectare of high intensified pasture.	
Palavras-Chave: 	ABC; Brazil’s Low Carbon Agriculture Plan; C stock; Extensive pastures; Forest; Intensively managed pastures; Irrigated pastures; Managed pastures; Sustainable and resilient environments.	
Categoria do assunto: 	X Pesquisa, Tecnologia e Engenharia	
Registro original: 	Embrapa Pecuária Sudeste (CPPSE)	
Exemplares: 	CPPSE - (26323-1) - UPC - AP - DD - PROCI-2021.00268 - OLI - 2024.00037 - DIS
CPAP - (60903-1) - UPC - AP - DD - 2021 -  - 2021 - DIS